/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.hive.ql.security.authorization.plugin;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import org.apache.hadoop.classification.InterfaceStability.Evolving;
import org.apache.hadoop.hive.common.classification.InterfaceAudience.LimitedPrivate;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeObject.HivePrivilegeObjectType;

/**
 * Utility functions for working with HivePrivilegeObject
 */
@LimitedPrivate(value = { "Apache Argus (incubating)" })
@Evolving
public class HivePrivilegeObjectUtils {

  /**
   * Convert list of dbnames into list of HivePrivilegeObject
   * @param dbList
   * @return
   */
  public static List<HivePrivilegeObject> getHivePrivDbObjects(List<String> dbList) {
    List<HivePrivilegeObject> objs = new ArrayList<HivePrivilegeObject>();
    for (String dbname : dbList) {
      objs.add(new HivePrivilegeObject(HivePrivilegeObjectType.DATABASE, dbname, dbname));
    }
    return objs;

  }

}
